Some Examples of 21st Century Philosophers Who Have Written About Keynes’s Logical Theory of Probability, but Have Skipped Part II of the A Treatise on Probability, Where Keynes Presented His Interval – Valued Approach to Probability

Abstract

Nearly one hundred years after Keynes published his A Treatise on Probability in 1921,it appears that practically no philosophers have read Part II of the A Treatise on Probability in either the 20th or 21st centuries. This simply means that no modern day philosopher is in any position to recognize that Keynes’s work on his interval valued approach to imprecise probability in 1907,1908 and 1921 makes him the founder, along with G Boole’s contributions in his 1854 The Laws of Thought ,of the imprecise theory of probability long before Koopman’s work in 1940 or the work of I. J. Good, C. Smith ,or H.E. Kyburg in the early 1960’s.